Drop '@brief' from doxygen comments

LLVM's coding guideline suggests to not use @brief for one-sentence doxygen
comments to improve readability. Switch this once and for all to ensure people
do not copy @brief comments from other parts of Polly, when writing new code.

llvm-svn: 280468
diff --git a/polly/lib/CodeGen/CodeGeneration.cpp b/polly/lib/CodeGen/CodeGeneration.cpp
index 9fd1df7..68b1d83 100644
--- a/polly/lib/CodeGen/CodeGeneration.cpp
+++ b/polly/lib/CodeGen/CodeGeneration.cpp
@@ -53,7 +53,7 @@
 
   CodeGeneration() : ScopPass(ID) {}
 
-  /// @brief The datalayout used
+  /// The datalayout used
   const DataLayout *DL;
 
   /// @name The analysis passes we need to generate code.
@@ -96,7 +96,7 @@
     }
   }
 
-  /// @brief Mark a basic block unreachable.
+  /// Mark a basic block unreachable.
   ///
   /// Marks the basic block @p Block unreachable by equipping it with an
   /// UnreachableInst.
@@ -107,7 +107,7 @@
     OrigTerminator->eraseFromParent();
   }
 
-  /// @brief Generate LLVM-IR for the SCoP @p S.
+  /// Generate LLVM-IR for the SCoP @p S.
   bool runOnScop(Scop &S) override {
     AI = &getAnalysis<IslAstInfo>();
 
@@ -198,7 +198,7 @@
     return true;
   }
 
-  /// @brief Register all analyses and transformation required.
+  /// Register all analyses and transformation required.
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<DominatorTreeWrapperPass>();
     AU.addRequired<IslAstInfo>();
diff --git a/polly/lib/CodeGen/IRBuilder.cpp b/polly/lib/CodeGen/IRBuilder.cpp
index 390de8b..cedbe29 100644
--- a/polly/lib/CodeGen/IRBuilder.cpp
+++ b/polly/lib/CodeGen/IRBuilder.cpp
@@ -21,7 +21,7 @@
 using namespace llvm;
 using namespace polly;
 
-/// @brief Get a self referencing id metadata node.
+/// Get a self referencing id metadata node.
 ///
 /// The MDNode looks like this (if arg0/arg1 are not null):
 ///
diff --git a/polly/lib/CodeGen/IslAst.cpp b/polly/lib/CodeGen/IslAst.cpp
index 0152395..4b7cde0 100644
--- a/polly/lib/CodeGen/IslAst.cpp
+++ b/polly/lib/CodeGen/IslAst.cpp
@@ -72,24 +72,24 @@
                                     cl::cat(PollyCategory));
 
 namespace polly {
-/// @brief Temporary information used when building the ast.
+/// Temporary information used when building the ast.
 struct AstBuildUserInfo {
-  /// @brief Construct and initialize the helper struct for AST creation.
+  /// Construct and initialize the helper struct for AST creation.
   AstBuildUserInfo()
       : Deps(nullptr), InParallelFor(false), LastForNodeId(nullptr) {}
 
-  /// @brief The dependence information used for the parallelism check.
+  /// The dependence information used for the parallelism check.
   const Dependences *Deps;
 
-  /// @brief Flag to indicate that we are inside a parallel for node.
+  /// Flag to indicate that we are inside a parallel for node.
   bool InParallelFor;
 
-  /// @brief The last iterator id created for the current SCoP.
+  /// The last iterator id created for the current SCoP.
   isl_id *LastForNodeId;
 };
 } // namespace polly
 
-/// @brief Free an IslAstUserPayload object pointed to by @p Ptr
+/// Free an IslAstUserPayload object pointed to by @p Ptr.
 static void freeIslAstUserPayload(void *Ptr) {
   delete ((IslAstInfo::IslAstUserPayload *)Ptr);
 }
@@ -99,7 +99,7 @@
   isl_pw_aff_free(MinimalDependenceDistance);
 }
 
-/// @brief Print a string @p str in a single line using @p Printer.
+/// Print a string @p str in a single line using @p Printer.
 static isl_printer *printLine(__isl_take isl_printer *Printer,
                               const std::string &str,
                               __isl_keep isl_pw_aff *PWA = nullptr) {
@@ -110,7 +110,7 @@
   return isl_printer_end_line(Printer);
 }
 
-/// @brief Return all broken reductions as a string of clauses (OpenMP style).
+/// Return all broken reductions as a string of clauses (OpenMP style).
 static const std::string getBrokenReductionsStr(__isl_keep isl_ast_node *Node) {
   IslAstInfo::MemoryAccessSet *BrokenReductions;
   std::string str;
@@ -138,7 +138,7 @@
   return str;
 }
 
-/// @brief Callback executed for each for node in the ast in order to print it.
+/// Callback executed for each for node in the ast in order to print it.
 static isl_printer *cbPrintFor(__isl_take isl_printer *Printer,
                                __isl_take isl_ast_print_options *Options,
                                __isl_keep isl_ast_node *Node, void *) {
@@ -165,7 +165,7 @@
   return isl_ast_node_for_print(Node, Printer, Options);
 }
 
-/// @brief Check if the current scheduling dimension is parallel
+/// Check if the current scheduling dimension is parallel.
 ///
 /// In case the dimension is parallel we also check if any reduction
 /// dependences is broken when we exploit this parallelism. If so,
@@ -371,7 +371,7 @@
   return RunCondition;
 }
 
-/// @brief Simple cost analysis for a given SCoP
+/// Simple cost analysis for a given SCoP.
 ///
 /// TODO: Improve this analysis and extract it to make it usable in other
 ///       places too.
diff --git a/polly/lib/CodeGen/IslExprBuilder.cpp b/polly/lib/CodeGen/IslExprBuilder.cpp
index 30f4b0b..730d2c7 100644
--- a/polly/lib/CodeGen/IslExprBuilder.cpp
+++ b/polly/lib/CodeGen/IslExprBuilder.cpp
@@ -20,7 +20,7 @@
 using namespace llvm;
 using namespace polly;
 
-/// @brief Different overflow tracking modes.
+/// Different overflow tracking modes.
 enum OverflowTrackingChoice {
   OT_NEVER,   ///< Never tack potential overflows.
   OT_REQUEST, ///< Track potential overflows if requested.
diff --git a/polly/lib/CodeGen/IslNodeBuilder.cpp b/polly/lib/CodeGen/IslNodeBuilder.cpp
index cfd7b53..e5cbbb7 100644
--- a/polly/lib/CodeGen/IslNodeBuilder.cpp
+++ b/polly/lib/CodeGen/IslNodeBuilder.cpp
@@ -106,8 +106,8 @@
   return UB;
 }
 
-/// @brief Return true if a return value of Predicate is true for the value
-/// represented by passed isl_ast_expr_int.
+/// Return true if a return value of Predicate is true for the value represented
+/// by passed isl_ast_expr_int.
 static bool checkIslAstExprInt(__isl_take isl_ast_expr *Expr,
                                isl_bool (*Predicate)(__isl_keep isl_val *)) {
   if (isl_ast_expr_get_type(Expr) != isl_ast_expr_int) {
@@ -128,7 +128,7 @@
   assert(isl_ast_node_get_type(For) == isl_ast_node_for);
   auto Body = isl_ast_node_for_get_body(For);
 
-  // First, check if we can actually handle this code
+  // First, check if we can actually handle this code.
   switch (isl_ast_node_get_type(Body)) {
   case isl_ast_node_user:
     break;
@@ -177,7 +177,7 @@
     return NumberIterations + 1;
 }
 
-/// @brief Extract the values and SCEVs needed to generate code for a block.
+/// Extract the values and SCEVs needed to generate code for a block.
 static int findReferencesInBlock(struct SubtreeReferences &References,
                                  const ScopStmt *Stmt, const BasicBlock *BB) {
   for (const Instruction &Inst : *BB)
@@ -487,7 +487,7 @@
   isl_id_free(IteratorID);
 }
 
-/// @brief Remove the BBs contained in a (sub)function from the dominator tree.
+/// Remove the BBs contained in a (sub)function from the dominator tree.
 ///
 /// This function removes the basic blocks that are part of a subfunction from
 /// the dominator tree. Specifically, when generating code it may happen that at
@@ -904,7 +904,7 @@
   return true;
 }
 
-/// @brief Add the number of dimensions in @p BS to @p U.
+/// Add the number of dimensions in @p BS to @p U.
 static isl_stat countTotalDims(isl_basic_set *BS, void *U) {
   unsigned *NumTotalDim = static_cast<unsigned *>(U);
   *NumTotalDim += isl_basic_set_total_dim(BS);